Percent Change & Percent Error
Find the percent of change. Identify whether it is an increase or a decrease:
25 basketballs to 35 basketballs
40% increase
Carmen wants to subscribe to a streaming service that costs $42.99 per month. The sales-tax rate in her city is 5%. What is the total cost of the streaming service each month?
$45.14
Find the sale price:
$125 tablet; 10% discount
$112.50
Find the simple interest earned:
$650, 5%, 1 year
$32.50
Mrs. Cousins works in a pool store and earns a 9.5% commission on every swimming pool she sells. How much commission would she earn for selling a pool that costs $5,600?
$532.00
Find the percent of change. Identify whether it is an increase or a decrease:
220 votes to 110 votes
50% decrease
Teegan wants new bedroom furniture. The furniture costs $429.99 before tax. The sales-tax rate in his city is 6.25%. What is the total cost of the furniture?
$456.86
Find the sale price:
$96 dress; 35% discount
$62.40
Find the simple interest earned:
$980, 8%, 9 months
$58.80
Angelica purchases $25.75 worth of cosmetics online. There is a 2% processing fee. What is the total cost of the cosmetics? Round to the nearest cent.
$26.27
On Monday, the bakery made 32 dozen muffins. They were so popular that on Tuesday, the bakery made 50 dozen muffins. What is the percent of increase in the number of muffins baked? Round to the nearest tenth if necessary.
56.3%
Janelle and some friends went out to dinner. The cost of the meal was $68.50. They left
a 20% tip. What was the total cost of the dinner, including the tip?
$82.20
During a clearance sale at a nursery, all plants were marked down 20%. On Saturday, an additional 10% is taken off the already reduced price. If a plant originally cost $95.50, what is the final price after all discounts have been taken?
$68.76
The McDougals borrow $3,800 at a rate of 7.3% per year to install a swimming pool in their yard. How much simple interest will they owe if it takes them 6 months to repay the loan?
$138.70
Miguel wants to earn at least $750 this month in commission. What is the minimum amount he needs to sell if he earns a 2.3% commission on everything he sells? Round to the nearest dollar.
$32,609
An order of flowers should contain
120 dozen roses. The order actually contains 110 dozen roses. What is the percent error to the nearest tenth?
9.1%
The Playground Center purchases swing sets for $385.99. It sells the swing sets for $598.99. What is the percent of markup? Round to the nearest percent.
55% markup
Gina received a 30% discount on a new pair of glasses. The sale price of the glasses was $49.95. What was the original price of the glasses? Round to the nearest cent.
$71.36
Tegan’s aunt deposited $4,000 into a savings account for her. The account pays 4.5% simple interest each year. If she neither adds nor withdraws money from the account, how much interest will she earn after 20 months?
$300.00
Two online shoe stores has different shipping options. One store has a flat fee of $10.95. The second store has a 6% shipping fee on the selling price. If Briana purchase a pair of boots for $165, which is the lesser fee?
6% of the selling price, which is $9.90
A sports journalist estimates that a certain team will win 9 out of their 12 games this season. After 3 games, the team has won 2. If the team continues winning at this rate, what will be the percent error of the journalist's estimate once the season is over?
12.5%
A toy store sells wagons for $49.70. The markup was 40%. What was the wholesale price?
$35.50
A swimming pool is on sale for $875.50. If the original price was $1,030.00, what was the discount? Express answer as a percent.
15%
A local camping store deposited $12,000 into a savings account. The account pays 2.5% simple interest. If the store does not add or withdraw money from the account, how much total money will the store earn after 8 months?
$12,200
There are two online marketplaces. McRay's charges a flat fee of $7.95. Buy Yourself charges 10% of selling price. If you sell a model train car for $135, which is the greater fee? By how much greater?
Buy Yourself by $5.55